/*
 * Copyright (c) 2007, 2021, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xml.internal.utils;

/**
 * Simple class for fast lookup of char values, when used with
 * hashtables.  You can set the char, then use it as a key.
 *
 * @xsl.usage internal
 */
public class CharKey extends Object {

    /**
     * String value
     */
    private char m_char;

    /**
     * Constructor CharKey
     *
     * @param key char value of this object.
     */
    public CharKey(char key) {
        m_char = key;
    }

    /**
     * Default constructor for a CharKey.
     */
    public CharKey() {
    }

    /**
     * Get the hash value of the character.
     *
     * @return hash value of the character.
     */
    public final void setChar(char c) {
        m_char = c;
    }


    /**
     * Get the hash value of the character.
     *
     * @return hash value of the character.
     */
    public final int hashCode() {
        return (int) m_char;
    }

    /**
     * Override of equals() for this object
     *
     * @param obj to compare to
     * @return True if this object equals this string value
     */
    public final boolean equals(Object obj) {
        return ((CharKey) obj).m_char == m_char;
    }
}
